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COMMISSIONING
6.5.2
Checking the gas rate
▶ The gas rate should be measured at the gas meter after the boiler has
been operating for a minimum of 10 minutes at maximum output.
▶ See Technical data section on page 9 of this manual for gas rates and
CO/CO
ratios.
2
▶ Where a gas meter is not available (e.g. L.P.G.) the CO/CO
checked.
6.5.3
Gas rating test
▶ Ensure all other gas appliances are isolated.
1. Set the boiler to maximum output by pressing
together for at least 5 seconds.
The chimney sweep symbol (1) will be displayed at the top of the
screen and the word "Max" will flash at the bottom of the screen. The
boiler will ramp up to maximum output in 30 to 35 seconds.
≈ ≈
5 s
5 s
eco
°C
reset
ok
°F
Max
1.
e
min
max
Fig. 60 Setting boiler to maximum
▶ Ensure that the boiler has stabilised at maximum output.
▶ Carry out Gas rating procedures as described in "Essential Gas
Safety" third edition.
▶ If pressure and gas rate are satisfactory press the
boiler will return to normal operation.
– If left in the service mode the control will return to normal operation
after 15 minutes.
6.5.4 Checking for leaks during operation
▶ Use an approved leak detector to check all connections for possible
leaks. The product must be certified as a gas leak testing agent.
▶ Do not allow the product to come into contact with the electrical
wiring.
6.6
Domestic hot water
Controlling the hot water temperature:
The hot water temperature can be set to between approximately 40°C
and 60°C using the DHW temperature control.
6.6.1 Domestic hot water eco and preheat modes
• Eco mode is an energy saving feature which disables the Preheat
function. Eco is enabled by default, during the initial appliance start
up and Eco is displayed.
• Preheat mode, the hot water heat exchanger is kept pre-heated to
reduce the time taken to deliver hot water at the tap.
In the Preheat mode, if there has been no demand for hot water for 24
hours the appliance will save energy by suspending Preheat until there is
a demand for hot water. At this time Preheat mode is re-activated. It is
advised to use a twin channel programmer to time the Preheat function
and switch it off when it is not needed.
38
must be
2
and the
button
eco
2
1
1
3
0
bar
4
1
min
max
°C
°F
Max
button and the
ok
CDi Compact
ErP
- 6 720 813 276 (2015/07)
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